REVEALED: Grand Canyon tourists were exposed to radiation 4,000 times the safe limit for two decades from uranium stored in three buckets in a museum - and the park 'tried to cover it up' after they were removed | WHAT REALLY HAPPENED

Tourists, employees and children on tours were exposed to radiation from uranium sitting in the Grand Canyon's museum collection building for nearly two decades, according to the park's safety manager.

Elston 'Swede' Stephenson, the park's safety, health and wellness manager, warned of possible health consequences to staff and the public from three five-gallon buckets of uranium ore which he claims were stored next to a taxidermy exhibit from 2000 until June 18, 2018, according to AZ Central.

Stephenson revealed the information in a rogue email to staff after bosses failed to issue any information on the exposure for eight months, he claims.

He believes top management are now involved in a cover-up operation, saying he has been cut off from all information about the exposure.

In his email, Stephenson wrote: 'If you were in the Museum Collections Building (2C) between the year 2000 and June 18, 2018, you were 'exposed' to uranium by OSHA's definition.'